Software Refuses To Quit

I have a Mac Version 10.6.1 -Processor 2.4 GHz Intel Cor 2 Duo

Memory 4 GB 667 MHz DDR2 SDRAM

Photoshop CS4

Lightroom 2

Recently I downloaded Topaz Fusion Express to use within Lightroom to use Topaz Detail and Topaz Adjust.

Everytime I use Topaz Products within Topaz Fusion Express - Topaz Fusion refuses to quit when shutting down my computer.

I always need to do a force quit.

Please advise

thank you

Have a look at this link which advises downloading again as there was a bug in the earlier downloads:-

Flickr: Discussing Need some help with Topaz Fusion w/ Lightroom on Mac in Topaz Software